6013_Mecklenburg_NorthMeck_GreenwayWaste_CDLF_Phase1_PostBlastingSewer_FID1821346_20231116

Via email to
iaclynne. drummon",,ncden r.,-ov
November 16, 2023
NC DEQ
Solid Waste Section
1646 Mail Service Center
Raleigh, NC 27699-1646
Attention: Ms. Jackie Drummond
Re: Post -Blasting Shallow Groundwater Elevation Report
Greenway Waste Solutions at North Meck C&D Landfill
Huntersville, NC
Dear Jackie:
Greenway Waste Solutions at North Meck, LLC (GWSNM) is submitting this letter report to
document and discuss the results of shallow groundwater elevation monitoring during bedrock
blasting activities associated with the installation of municipal sewer lines along the southeast
boundary of the Closed Phase I Area at the Greenway Waste Solutions at North Meck, LLC
C&D Landfill. A site location map is provided as Figure 1. Site layout map depicting
monitoring well locations and the blasting area is provided as Figure 2.
1.0 Site Description & Background
The subject Site is operated by GWSNM under Solid Waste Facility Permit Number 60-13. The
landfill facility address is 15300 Holbrooks Road, Huntersville, North Carolina (Site). As shown
in Figure 2, the landfill contains two disposal areas: the Infill Area and the Closed Phase I Area.
The currently active Infill Area is situated in the northern portion of the landfill property. The
boundaries of the Infill Area include additional GWSNM landfill property as well as land owned
by Mecklenburg County, including the David B. Waymer Flying Regional Park (a former
unlined municipal solid waste landfill - Holbrooks Road Landfill) to the north and east. An
unnamed tributary of Cane Creek bounds the Infill Area to the south, beyond which lies the
Closed Phase I Area C&D landfill. The west and northwest boundaries include private property,
a Colonial Pipeline easement, and land owned by the Town of Huntersville.
B Gfift ftthm&
GreenWo lUoste Solutions

In late August 2023, State Utility Contractors, Inc. (SU) informed GWSNM that shallow bedrock
blasting would be required near the southeast side of the Closed Phase I Area for the installation
of a municipal sewer line. The area in question is located approximately 350 feet east of
compliance monitoring wells MW-4, MW-4A, MW-41), and MW-413-1, and approximately 350
feet south of compliance monitoring wells MW-6, MW-61), and MW-6D-1. GWSNM
immediately contacted North Carolina Department of Environmental Quality Solid Waste
Section (DEQ) via phone to provide an update. DEQ requested that GWSNM monitor water
levels in the above -mentioned monitoring wells immediately before and after blasting activities,
as well as one week after blasting, to ensure that blasting activities did not affect local
hydrogeologic conditions.
2.0 Methodology & Results
Blasting activities were conducted on September 6, 2023. GWSNM personnel were on -site to
collect water level measurements and observe blasting activities. Depth -to -water measurements
were collected with a decontaminated electronic water level meter from MW-4, MW-4A, MW-
4D, MW-4D-1, MW-6, MW-61), and MW-613-1 relative to the surveyed top of casing of each
monitoring well immediately before and immediately after each blasting event. Water level
measurements were then conducted on September 13, 2023, which was seven days after the
blasting event. A table detailing this groundwater elevation data as well as select monthly well
gauging data is provided as Table 1. The results indicate that water level elevations in all
monitored wells show no significant change following blasting activities.
B Grift G.thm &
GreenWo lUoste Solutions
2

3.0 Conclusions
Blasting activities associated with the installation of a municipal sewer line adjacent to the
Greenway Waste Solutions at North Meck C&D Landfill were conducted on September 6, 2023.
Water level measurements were collected from proximal monitoring wells MW-4, MW-4A,
MW-4D, MW-4D-1, MW-6, MW-6D, and MW-6D-1 immediately before and immediately after
each blasting event, as well as seven days after the blasting event.
As shown in Table 1, groundwater elevations remained generally stable during blasting
activities. Additionally, groundwater was not observed in the area of blasting. Please feel free to
contact me at [phone] with any questions.
Sincerely,
Greenway Waste Solutions at North Meek, LLC
0000
Brandt Kayser, P.G.
Environmental Compliance Officer
Attachments:
Figure 1 Site Location Map
Figure 2 Site Layout Map
Table 1 Summary of Groundwater Elevation Data
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Greenulo lUoste Solutions
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REFERENCE
U.S.G.S. 7.5' TOPOGRAPHIC MAP, CORNELIUS QUADRANGLE, NC DATED: 2016.
SCALE IN FEET
0 1000 2000
, 1AF IA
7
NORTH
REE WAY WASTE SOLUTIONS OF L
Civil & Environmental Consultants, Inc.
NORTH MECK, LLC
3701 Arco Corporate Drive - Suite 400 - Charlotte, NC 28273
Ph: 980.237.0373 - Fax: [phone]
SITE LOCATION MAP
www.cecinc.com
DRAWN BY: CTH
CHECKED BY: MBG
APPROVED BY: DMC
FIGURE NO.:
1
DATE:
1 DWG SCALE: 1 1000'1
PROJECT NO: 111-370.001
AUGUST 2020

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SURFACE WATER SAMPLING
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[1i i i GREENWAY WASTE SOLUTIONS OF
A AV AV NORTH MECK, LCC
Civil & Environmental Consultants, Inc. NORTH MECKLENBURG LANDFILL
1900 Center Park Drive - Suite A - Charlotte, NC 28217 HUNTERSVILLE, NORTH CAROLINA
REFERENCE Ph: 980.237.0373 - Fax: [phone] SITE LAYOUT MAP
SCALE IN FEET www.cecinc.com
1. AERIAL IMAGERY TAKEN FROM GOOGLE EARTH PRO. DRAWN BY: JKS/PAB CHECKED BY: EHS APPROVED BY: EHS ATTACHMENT:
DATED OCTOBER 8, 2016 0 400 800 DATE: November 2023 DWG SCALE: 1" = 400' PROJECT NO: 111-370.0001

Table 1 (Page 1 of 1)
Summary of Groundwater Elevation Data
Greenway Waste Recycling of North Meck, LLC
Huntersville, North Carolina
Date
6/5/23
7/18/23
8/9/23
9/6/23 (Pre -Blasting)
9/6/23 (Post -Blasting)
9/13/23
10/23/23
Well ID
Top of Casing
Elevation (ft msl)
Depth to
Groundwater
Depth to
Groundwater
Depth to
Groundwater
Depth to
Groundwater
Depth to
Groundwater
Depth to
Groundwater
Depth to
Groundwater
Groundwater
Elevation
Groundwater
Elevation
Groundwater
Elevation
Groundwater
Elevation
Groundwater
Elevation
Groundwater
Elevation
Groundwater
Elevation
ft below TOC
feet msl
ft below TOC
feet msl
ft below TOC
feet msl
ft below TOC
feet msl
ft below TOC
feet msl
ft below TOC
feet msl
ft below TOC
feet msl
MW-4
717.55
33.94
683.61
34.03
683.52
34.14
683.41
33.41
684.14
33.41
684.14
33.46
684.09
33.78
683.77
MW-4A
711.63
32.22
679.41
31.90
679.73
31.99
679.64
30.72
680.91
30.72
680.91
30.90
680.73
31.75
679.88
MW-41D
711.3
31.75
679.55
31.44
679.86
31.56
679.74
30.90
680.40
30.91
680.39
30.94
680.36
31.58
679.72
MW-4D-1
712.09
32.08
680.01
31.72
680.37
31.88
680.21
31.06
681.03
31.06
681.03
31.40
680.69
31.83
680.26
MW-6
738.25
55.59
682.66
55.82
682.43
55.92
682.33
56.00
682.25
56.02
682.23
56.36
681.89
56.83
681.42
MW-61D
737.9
55.60
682.30
56.05
681.85
56.34
681.56
56.65
681.25
56.65
681.25
57.01
680.89
57.98
679.92
MW-6D-1
735.16
55.79
679.37
56.10
679.06
56.45
678.71
56.80
678.36
56.81
678.35
56.78
678.38
58.10
677.06
Notes:
TOC = Surveyed well top -of -casing elevation
feet msl = feet above mean sea level
Table 1 (Page 1 of 1)
Greenway Recycling of North Meek, LLC